Rotary razor-sharpening machine.



C. M. HERRING.

ROTARY RAZOR SHARPENING MACHINE.

APPLIGATION FILED DEC. 16, 1912.

1,087,536, Patented Feb..17, 1914.

WITNESSES TZAW INVENTOR CM- HE'HEINIl G. M. HERRING. R

ROTARY RAZOR SHARPENING MACHINE.

APPLIOATION FILED 1320.16, 1912.

1 0753 Patented Feb. 17, 19.14.

2 SHEETS-SHEET 2.

CHARLES at. summer, or roar won'rH, TEX-As.

Romany nazon-snanrnmne MACHINE.

Specification of Letters Patent.

Patented Feb.17, 1914..

' Application filed December 16, 1912. Serial No. 737,031.

To all whom itmay concern:

Be it known that I, CHARLES M. Hnnmno, a citizen of the United States,residing at Fort Worth, in the county of Tarrant and State of Texas,have invented new and useful Improvements in Rotary Razor-SharpeningMachines, of 'which the following is a specification.

This invention relates to razor stroppers, and particularly to devicesof this ,kind utilizing rotating grinding cylinders and has for anobject to provide an eflicient mounting for the rollers and means foroperating them, and particularly, an improved blade holder adapted tofunction in'engaging a blade with two rollers alternately, and totransmit modulations ofthe pressure applied. It is an important purposeto reduce the number of elements or parts involved in such a device,whereby its operation and repair will be easily understood and accomplished.

Another particular object is to give a simple construction of holder andmeans for securing it in engagement with a. blade,

making use of'icertain elements essential to the before mentionedfunctions. I Y

A further purpose is to readily adapt a small device of this order to.accommodate any form of blade, including that of the old style foldingrazor permitting the grinding thereof without removal of the handle.Additional objects and advantages will appear, some being apparent'fromthe following description and from the drawings,

in which- Figure 1 is a perspective side view of my device, Fig. 2 is atop view, thereof, Fig} 3 is a side view thereof,Fig. 4 is a detail ofthe operating crank, Fig.- 5 is a perspective view of a blade holder indisengaged posi tion,Fig. 6 is a similar view of a holder modified inits gripping arms, Fig. 7 is a similar view of a further modification ofthe same, Fig. 8 is a similar view of a still further form modified inthe same particulars.

Fig. 9, is an additional modification of the gripping arms, Fig. 10,isan end view of a modification of the grip structure.

There is illustrated a sharpener comprising the housing 10 formed of onepiece of sheet metal, including the fioor 11, and the upstanding ends 11turned upwardly at'right angles at each side of the floor and extendingfrom front to rear of the housing. Suitable knobs 12 are attached to theunder side of the floor at proper points. Adjacent the front and rearthe sides are each provided with apertures 13 in which are journaled thetrunnions '14 and 15 of the rollers 16. One of these rollers has two andthe other one,

trunnion 14 setting nearly flush with the outer side of the ends of thehousing. The other endof the last mentioned rollerhas an elongatedtrunnion provided with the teats 16 adapted to engage inthe spiral slots17 in. the end of the sleeve 18 of the crank 19 by which the device isoperated. It will be apparent that by this arrangement the rollers canonly be turned in one direction,

that is, with their adjacent surfaces moving downwardly. The rollers areprovided with one gear each at adjacent ends, thegears being somewhatlarger than the intermediate portions of the 'rolls and in mesh,

whereby the two rolls'are operated together,

spaced relation, as at 20. The rolls are and their adjacentsu'rfacesheld in proper surfaced with any customary or suitable materialfor use in sharpening razors, such as leather, for instance. The endsll'are ex:

tended upwardly some distance above the tops of the rolls,'beiiigpreferably inclined downwardly :toward' front and rear from their middleparts, or from a point centrally over the space between the rolls, wherea notch 21 or open bearing is formed in each wall for a purpose to beindicated.

Blade holders "22 are provided, which it will be observed do not have'tofbe materially modified toadapt them to use with; any of the familiarforms of blades now in use. As shown in all the figures except Fig. 10they comprise two pivoted wings, 23 and 24, each having jaws 2 5 and 26extendeddownwardlytherefrom and adapted to coengage with a bladepresented therebetween. The wings and jaws are stamped integrally fromsheet metal, and each adjacent each end has an ear 27 formed thereon andturned inwardly toward theopposite member, the ears being formed at theupper corners of the jaws, and one member maybe effect so as to receivethe ears of the other member therebetween'if desired.- The ears areapertured and receive therethrough a long somewhat longer than the jawsin most cases,

but this proportion is not arbitrary and may be changed as founddesirable, though it is considered preferable that the wings 'be asnearly as possible of such length that the fingers of an operator may bepressed there upon at a 'point equi-distant from the pin pivot with theedge of the blade held in the device.

The win s extend about at right angles to the jaws, tliough this is notessential, but it is desirable that the wings exten'd'nearly in a commonplane when in engaged position, so that they may be conveniently engagedby respective fingers of an operator, pressed upon their upper sides,and the holder oscillated to bear the engaged blade against-the rollsalternately.

The jaws may be variously shaped to engage particular kinds of blades,and in Figs. 5 to 9 of the drawings, there are shown various formsadapted for engagement with the particular kinds of blades shown in thea respective views as presented for gripping. In Fig. 5 that form ofblade consisting of a rectangular blank 30 of thin sheet steel.

sharpened at one edge and having a piece of heavier sheet metal 31 bentover the opposite edge, is shown,-and for gripping this the jaws havetheir outer edge portions 32 inset or offset from their inner portionsto ward the opposed jaws at a spaced distance from their pivots so as toengage the blade just within the reinforcing piece 31 on the blade. InFig. 6 the jaws are planiform and roughened'on their inner sides as at33 for engagement with the blade 34 shown in presentation, and whichconsists of a plain blank of sheet metal sharpened at one edge. In Fig.7 the blade is a plain blank substantially the'same as in Fig. 6, exceptthat at each corner opposite the cutting edge, short nibs 35 areprojected longitudinally therefrom. For holding this blade one jaw isprovided with an inwardly turned ear or tooth 36, at each end. Theopposite jaw is notched at the corners to receive the cars 36, and theblade is set between the jaws with the nibs engaged inwardly of theears. In Fig. 8, the jaws are provided one with apertures 37 and theother with teats 38 adapted to project thereinto, and spaced forengagement of the teats through the apertures of the blades 39 and 39there shown. In Fig. 9 the device is adapted for use with a blade 40 ofthe old style, or with safety razor blades having a similar crosssectional form. Here, the jaws are turned abruptly outward near the cars27, and then turned inward at an oblique angle.

F or holding the jaws in forcible coengagcment with a blade, any of theforms of holders described may have pivoted on one wing the short arm 41adapted to project over the opposite wing at distance, and having oneedge portion turned upwardly at its the end of the arm willst-rike whenmoved from the outer end toward the'inner end thereof. The upturned sideedge of the arm insures its proper engagement with the plate 44.

In Fig. 10 the holder is so modified that no fastening device will berequired therefor, the two wings being formed integrally and extendingin alinemen't for their major portions, their outer edges being turneddownwardly slightly. Resilient jaw pieces 45 corresponding in form tosuch of those before described as may be found practicable with thisform of the device aresecured to the under side of thawing piecedisposed close enough together to hold a blade tightly when it ispresented therebetween at one end and moved slidingly into roperposition for grinding, the ends of the aws being slightly curved apartto facilitate, this operation if desired.

One side of the casing or housing is provided with an opening 48consisting of a large upper portion for the reception of the thick partof the old style razor, and a lower part, between which fingers 49forming the sides of the opening, project-"inwardly into close enoughproximity to enga e the blade intermcdiately of' the cutting e ge andthe back. By the use of this opening an old style blade may be sharpenedwithout removal of the handle, the blade being inserted between therolls through the opening, leaving the handle outside. The'fingers 49prevent the cutting edge from striking the lower edge of the opening 48and becoming dulled or nicked. The fingers are so spaced as to allowsome play of the blade when the back is held a ainst the upper edge ofthe opening, and t e opening is located at such height as to allow theblade to engage the rolls at the proper point. The fingers 49 also guardthe rolls from being cut during presentation of the blade.

In use, a blade being engaged in one of the holders between the jaws,and the arm 41 forced into firm binding engagement with thelockingplate, the blade will be held secnrely. The blade is thenpresented down on respective wings and alternately bearing downwardlythereon with the desired The blade is thus held freely holder; r

amount of forcewhile the crank is operated.

It is animportant advantage of this device that the degree of pressuremay be most-conveniently modulated to obtain the finest' edge, yetpermitting heavy and rapid grind- .a lurality of blades at one time, ifdesired.

The sizes of the rolls may be varied to give the frictional areaconsidered best for efiiciency.

l Vhat is claimed is:

l. A sharpening machine comprising a housing, spaced grinding devicesmovable therein, and means to operate the grinding devices, openbearings at the sides of the housing, a blade holder constructed andadapted for detachable engagement with a blade, and having a pivot,element adapted to be set in the bearings, and oppositely extendingwings on-the holder at the upper part for manualieng'agement tooscillate the 2. A device of the class describedcomprising a housing,parallel grinding devices movable therein, means for operating-them,

nected, and means to lock the jaws 'upon an open bearings at oppositesides of the housing between the devices, a blade holder com- PIlSlIlgpivoted jaws adapted for gripping engagement with a blade, lateral wingson the jaws, projections at each end of the ho-lderadapted to rest inthe bearings, and means to lock the jaws upon a blade. I

3. Ina shar ening device having pivot bearings, and arasive meansthereadjacent, a blade holder comprising two members each including adownwardly extending jawinwardly turned ears at or near the uppercorners thereof and wings extending laterally outward therefrom at theirupper edges; a pin member coengaged thnough the ears to hold, themembers pivotallyconinterposed blade, said wingsbeing adapted formanipulation to oscillate the holder, the ends of the said pin beingadapted to restin the bearings.

, 4 In a sharpening device, a blade holder comprising two pivotallyconnected jaws adapted for coengagement upon a blade, each having a wingprojecting laterally from -the plane'of the blade, an arm pivoted uponthe outer side of one wing, and adapted to extend transversely acrossthe plane of adjacent jaw and engaged slidably over the opposite wing,alocking plate on the other having a curved edge eccentric to the pivotoft-he arm in the plane of oscillation of the arm and adapted to bindthe end of the arm when 'swungthereagainst to hold'the jaws-in clampingengagement with a blade.

5. In a device of the class described, -a holder comprising two elementseach including a downwardly extending work engaging jaw, and anoperating wing extended abruptly and laterally outward from the upperside of the jaw, inwardly extending apertured ears at or near the uppercorners of the jaws, the ears of one adapted to overlap and registerwith those of the other, a pin engaged through the ears and projectinglongitudinally therebeyond, an arm pivoted intermediatel' of the wing ofone element, the wing 02 the other having a curved slit formed thereineccentric to the pivot of 'the arm, the outer edge portion abuttin theslit being pressed upward and adapted to engage the end of the arm whenswung theretoward, to hold the jaws in clamping position.

6. The combination of parallel grinding devices, an intermediatesupport, a blade holder constructed and adapted to be pivoted on thesupport for oscillation into alternate engagement with the grindingdevices, the holder comprising two members eachof sheet metal eachhaving oneside portion shaped, and adapted to cooperate with'the likepart ofthe other member to grip a blade, pivotal connection between themembers and means to engage said support, side portions of the membersopposite said grip portions being bent abruptly outward adjacent thepivotal connections to form wings adapted to receive respective'fingezsof an operator thereon for oscillation of "an engaged blade by alternatepressure on each,

and means to secure the holder in engagement with the blade.

- F. B. LANTRY, -R-. V. ALLEN.

' In testimony whereof have hereunto set my hand in presence of twosubscribing

